Proceedings of Perovskite Thin Film Photovoltaics (ABXPV)
Publication date: 14th December 2015
In the past five years,the power conversion efficiency (PCE) of the organic-inorganic perovskite solar cells has been improved from 3% to over 20%.At present,the one step spin-coating and two step sequential solution process are the most common methods to fabricate the perovskite thin films.However,the reaction rate of PbI2 and CH3NH3I is too fast to form uniform and compact perovskite film by the solution process.In contrast,the vapor deposition method can provide slower reaction rate for solid phase (PbI2) and vapor phase (MAI) than the solution-based process and produce uniform perovskite layer.In this work,we applied the low-pressure chemical vapor deposition (LPCVD) technique to control the reaction kinetics between the organic vapor and the inorganic solid film to synthesis the perovskite thin film.Here,we applied single heating zone to provide uniform reaction environment for hybrid CH3NH3PbI3 and HC(NH2)2PbI3 perovskite film fabrication in the quartz tube.The power conversion efficiency of 14.99% and 10.41% (active area 0.24cm2) were obtained for CH3NH3PbI3 and HC(NH2)2PbI3 perovskite solar cell respectively by this LPCVD method.
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